2014-12-11 Hacking Baofeng RF Module
*This week Steve KB8STB will be talking about the chip that is the heart of
the BAOFENG series of cheap HTs. Hacking them for manual control and a
repackaging of it into a module that is easily used for multiple different
projects.*
------======= Additional Notes from Steve =======------
Fellow Thursday nighters...
Those of you who missed the meeting, or wish to do further study of the
chips and modules discussed tonight: I submit the following links.
1. For information about Repeaters and ham use of commercial radio gear...
The Repeater Builder Technical Information Page
http://www.repeater-builder.com/rbtip/
*The repeater-builder Yahoogroup that is associated with this web site has
over 5,200 members worldwide and is a tremendous resource of technical
knowledge on repeaters and repeater-building, be they amateur, commercial,
GMRS, public safety, CAP, or ...*
This is the email reflector which contained the messages about replacing a
crystal with a synthesized rf source.
2. KK6BWA http://elazary.com/ web page with articles about "Hacking the
BAOFENG UV5R"
On the left of his page is a TOPIC called Ham
Then follow the links to "Baofeng Radios"
Most of the material we looked at is under the #5 Article Titled
"Hacking the Baofeng UV5R"
This series of web pages includes links to:
Chirp Programing Software
UV5R schematics
Information about disassembling the radio
The EM78P568 Microcontroller
And the RDA1846 "single chip transceiver for walkie talkie"
(which can be purchased in single quantities for about $5.50 each
3. Finally, the DORJI High Power Voice Transceiver Module
http://www.dorji.com/pro/Modules/Audio_voice_transceiver.html
This is the module that is based on the RDA1846 chip
Follow the links on the right of this page for info on:
the VHF and UHF versions
Application circuit
and other programming and control documents
These modules are available on Ebay for $11-14 each
Search Ebay for either "dra808" or "dra818" i was searching for
"DORJI" at the meeting and got poor results
OR try viewing the Ebay Store for seller DORJIGROUP
http://stores.ebay.com/embeddedsolution/
(Note: DORJIGROUP may not be selling)
Just noticed that they sell an Arduino 433MHz transceiver module with
a "DRF1278f" chip on it... could a HAM remove that chip and put the RDA1846
in its place and have an Arduino controlled UHF transceiver???
Thank you all fro your interest, hope this info has/will inspire some of
you to experiment and have some fun with radio!!
Steve
KB8STB